A man was stabbed in the leg during a fight on a Brighton Beach subway on Wednesday morning, according to police.

Authorities say it happened as the southbound Q train was approaching the station around 2:40 a.m.

Officers were alerted, and the suspect was taken into custody. The victim was also taken into custody after punching the suspect in the face during the course of the arrest.

Authorities say the victim was taken to NYU Langone in stable condition.